# k8s/deployment.yaml
# ============================================
# Chat Switchboard - Kubernetes Deployment Template
# ============================================
# Variables substituted by CI/CD via envsubst:
#   DEPLOY_NAME, ENVIRONMENT, IMAGE_TAG, BASE_PATH,
#   DB_NAME, REPLICAS, NAMESPACE, REGISTRY, IMAGE_NAME,
#   DOMAIN, CERT_ISSUER, POSTGRES_HOST, POSTGRES_PORT,
#   MEMORY_REQUEST, MEMORY_LIMIT, CPU_REQUEST, CPU_LIMIT
# ============================================
apiVersion: apps/v1
kind: Deployment
metadata:
  name: ${DEPLOY_NAME}
  namespace: ${NAMESPACE}
  labels:
    app: chat-switchboard
    env: ${ENVIRONMENT}
    service: chat-switchboard
spec:
  replicas: ${REPLICAS}
  selector:
    matchLabels:
      app: chat-switchboard
      env: ${ENVIRONMENT}
  template:
    metadata:
      labels:
        app: chat-switchboard
        env: ${ENVIRONMENT}
        service: chat-switchboard
    spec:
      containers:
      - name: switchboard
        image: ${REGISTRY}/${IMAGE_NAME}:${IMAGE_TAG}
        imagePullPolicy: Always
        ports:
        - containerPort: 80
          name: http
        env:
        - name: ENVIRONMENT
          value: "${ENVIRONMENT}"
        - name: BASE_PATH
          value: "${BASE_PATH}"
        - name: PORT
          value: "8080"
        # ── Database connection ──
        - name: POSTGRES_HOST
          value: "${POSTGRES_HOST}"
        - name: POSTGRES_PORT
          value: "${POSTGRES_PORT}"
        - name: POSTGRES_DB
          value: "${DB_NAME}"
        - name: POSTGRES_USER
          valueFrom:
            secretKeyRef:
              name: switchboard-db-credentials
              key: POSTGRES_USER
        - name: POSTGRES_PASSWORD
          valueFrom:
            secretKeyRef:
              name: switchboard-db-credentials
              key: POSTGRES_PASSWORD
        - name: DATABASE_URL
          value: "postgres://$(POSTGRES_USER):$(POSTGRES_PASSWORD)@${POSTGRES_HOST}:${POSTGRES_PORT}/${DB_NAME}?sslmode=disable"
        resources:
          requests:
            memory: "${MEMORY_REQUEST}"
            cpu: "${CPU_REQUEST}"
          limits:
            memory: "${MEMORY_LIMIT}"
            cpu: "${CPU_LIMIT}"
        livenessProbe:
          httpGet:
            path: /
            port: 80
          initialDelaySeconds: 10
          periodSeconds: 30
          timeoutSeconds: 5
          failureThreshold: 3
        readinessProbe:
          httpGet:
            path: /health
            port: 8080
          initialDelaySeconds: 5
          periodSeconds: 10
          timeoutSeconds: 3
          failureThreshold: 3
---
apiVersion: v1
kind: Service
metadata:
  name: ${DEPLOY_NAME}
  namespace: ${NAMESPACE}
  labels:
    app: chat-switchboard
    env: ${ENVIRONMENT}
spec:
  selector:
    app: chat-switchboard
    env: ${ENVIRONMENT}
  ports:
  - protocol: TCP
    port: 80
    targetPort: 80
    name: http
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: ${DEPLOY_NAME}
  namespace: ${NAMESPACE}
  annotations:
    cert-manager.io/cluster-issuer: "${CERT_ISSUER}"
    traefik.ingress.kubernetes.io/router.entrypoints: websecure
  labels:
    app: chat-switchboard
    env: ${ENVIRONMENT}
spec:
  ingressClassName: "traefik"
  tls:
  - hosts:
    - ${DOMAIN}
    secretName: chat-switchboard-tls
  rules:
  - host: "${DOMAIN}"
    http:
      paths:
      - path: ${BASE_PATH}
        pathType: Prefix
        backend:
          service:
            name: ${DEPLOY_NAME}
            port:
              number: 80